Plot hole: When Gloria picks up Scotty on the road towards the beginning of the movie, they are being followed by the black car. But if Scotty had been being followed, the car would have easily caught up to him when his car broke down. (00:09:20)
Plot hole: When the albino kidnaps Gloria in the middle of the day, he is looking for the film obviously. So he would have checked her purse for it because that's where it most likely would be if she'd had it with her. But if he did check her purse, he would have seen all that "equipment" from Stella in there. But Gloria still has it when she comes to consciousness. What kidnapper would leave weapons in her reach? (00:48:35 - 00:50:05)